1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8731b6061361bc4854932997d60a6b6d610660ec9ee4abb5b6a91a43d496566. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/191e7ff3-db2a-4da6-8552-59d288075eb7.json and https://artists.proofprofile.net/proofs/artist/191e7ff3-db2a-4da6-8552-59d288075eb7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a1c19c801f4a72e925517b5663604eaa6c6c4d0a97e0863bbf15310b769d4e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U62233901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc906a3b15cd89adddc90e0c642a9cd1aa273861aad54189b4d947e3d83ba7d0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U62233902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc795d208894412f3ebdaafcaa95d92127e24122728bbc6f26ffceb251adbd25. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U62233903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037631bf1abad76d044457de3b8c1ee4df9e6472b100a3a96e2b058128d70df0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U62233904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a956360e3d28200945a1249a95f32a1f9473694619a1d41251c3f7788931351. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U62233905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39b8988ad72a8e853ab98603a7f3802c2deec1176b80fb24d8270f0894421ab. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U62233906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4f4a5f9392da029b23520b28380d9ac0bdcd89691f171957088a0dd1fa7bbb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U62233907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce3a9a90005ed8daaba33dfcca851384a178093763da7773b390e438a7c4fe0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U62233908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe3cd2a16cc0228af14d565040b04bda6354e51d0963c549d039f411b1784ce. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U62233909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bb6631931e8e03cc5801161973216dbae2ba112c96ec76d58bb22e173b9316. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U62233910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde801caff1fcf4cfa30812d1079878de41c5e724b39a631dd3b5151efabad3f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U62233911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b4d4e289517cfb116e2b5b7f678d38749642c742a26ce7e4cb650659ba3cff. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U62233912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19882fc12665e3f5bc90a562b2d7f22f6f828428ff087657f2cea22efb2c7385. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U61929701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63843ac2e1d340abed9263809860926c303dd91190c2d29646b81d35c4683999. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U61929702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3370f778d84c7280a5e84e5e6b56d14e9adf5d1d193952715373a5c129b30888. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U61929703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeef9a9400cf0abf3730f896804441d51df4b444dd9e389b6857a5ec586b4c72. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U61929704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0726d884fb01f28d4d95fc869cd0d1775e31189640faaa42a9b1856ff9f88a3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U61929705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761304435c7c1cd6bef4ad5df8bf35742ef4dbbd316c31323f9b56b3184b40ac. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U61929706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43249c95bc5dfec512282f138f0cd2563a8e7b400d0da13d3c3ba35c118106c8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U61929707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1864137c0e8886fe6f16817f6046c0c592f86605dcea7b1cc436ffb60d5250f8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U61929708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa704be053170108c5bf326dced371c18399a1e23ae3efc64ea502c436a28084f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U61929709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1b649d3e12cbfb0d273053312962f127115975966aba1bb1a0e6d10b7c204b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21737457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf92f81de03599b99f6380b8bd1d01b0bbdcde9de233d1c65bc920c67b4fa02d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21737458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9ac4fe22b06cf083e999939d987fd6da382ab817d59a6c0b027375362a3916. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21737459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b7aae05b6fe3b3c435126e3dbc776909b47aeb7bf22f57d6847619d0d1c6de. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21737460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07c94c172a8cd724a42c7f3c00fcbac8f4aa768b6b89632fc5e0820bc0500ba. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21737461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be4857ee85037c4532b03e2819b29aa3dd82a95ee2b21dbb55418f04223c53e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21737462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750dcd55bbdfba220c72c75ef603ce6a7c93812d5d4af07672d07888644d9f6e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21737463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b6c5f26c3d5696abfbd6f3cb6d3172cc16d2232a0ded3deede227e92f61416. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21737464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e396f75a9fe7cb42dcf26805548037bd802d7db24d2211a7ef7fbcf235e2f81. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ2423009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85817d53102accc66e055ce23eeb4294cbc10dc962112e6086d294ff652ee18a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMH92397639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde801caff1fcf4cfa30812d1079878de41c5e724b39a631dd3b5151efabad3f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U62233911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39b8988ad72a8e853ab98603a7f3802c2deec1176b80fb24d8270f0894421ab. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U62233906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a1c19c801f4a72e925517b5663604eaa6c6c4d0a97e0863bbf15310b769d4e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U62233901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b4d4e289517cfb116e2b5b7f678d38749642c742a26ce7e4cb650659ba3cff. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U62233912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf3f0956bd793d6a4ff9c75ebdaa741fc46ec0723f3dba8f6389cbf2978ccc9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2U61929301.